Geographical clock.



Patented Oct. 5, 1909.

J. B. OLINGER. GEOGRAPHICAL CLOCK.

APPLICATION FILED PEB.15,1909.

AIL (F4. t W v VA M x I JEAN 1B. OLINGER, E MILWAUKEE, WISCONSIN.

GEOGRAPHICAL CLOCK.

Specification of Letters ratent.

Patented Oct. 5, 1909.

Application filed February 15, 1909. Serial No. 477,879.

To all whom it may concern:

' Be it known that I, JEAN B. ()Lmonn, a. citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of \Visconsin, have invented a new and useful Geographical Clock, of which the following is a specification.

My invention relates to improvements in geographical clocks.

The objects of my invention are to provide means for indicating antipodean points or points in opposite meridians in juxtaposition on the clock dial in connection with figures or characters indicative of the difi'erence in time between such points and the place at which the clock is located, the number of degrees from the Greenwich meridian or any other which maybe regardedas a prime meridian, and the time of day (or night), at any given place 'on an ordinary twelve hour dial. Also to provide improved means for connecti the rotary dial of such a clock with the drivin mechanism and providing means for win ing the actuating spring from beneath in older to avoid the necessity of winding at a fixed time when a hole in the dial is in registry with the windin g key stem.

which,-

view of the central portion of the dial showing a part of the driving connections and the arbor of the minute hand. Fig. 4.- is a frgnt view on a reduced scale, showing a modified arrangement of the dial figures.

Like parts are identified by the same reference characters throughout the'several views.

A rotary dial A is mounted between supportingdisks B B the latter being of glass so that the dial is exposed to View. Both disks may be of glass where the dial is to be illuminated from the rear. The disks B B are centrally secured together by means of a with sufiicient frictional contact with the member C to cause it to normally rotate with such men'iber and with the dial.

The main spring G is shown in Fig. 2. lt is wound up by means of a depending lever II which is pivoted upon the winding shaft I and actuates the shaft through a spring supported pawl J and ratchet K, the latter being fast on the shaft, so that by swinging lever ll the spring may be wound This lever extends below the dial as shown in Fig. 1.

The dial is arranged to revolve within a fixed annulus L having marks and charachers indicative of the twenty-four hours of the day and subdivisions thereof, the dial being provided with equidistant projecting pointers M of which there are preferably twelve, the space between any two representing one hour in time. The space on the dial between these pointers, and between the periphery of the dial and a circle defined by a line N, is subdivided radially into two differently colored divisions O and I, for each pointer, one division bearing the name of a prominent city or geographical division and another the name of a city or division located 5 on the antip-odean meridian or at 180dis- In the following description, reference is had to the accompanying drawings in r i 1 selected that each will be substantially fifteen Figure 1 is a front view of my improved E clock showing the face of the dial. Fig. 2 is a detail View of the windingratclfet and spring. Fig. 3 is a detail cross sectionaltance. The cities or divisions on successive sections of the same color or character are so degrees distant from the preceding one, or at least will have a standard time reckoning differing by one hour from that of the preceding stationl Figures representing the distance in degrees of the city or division indicated by any given section from prime meridian", are preferably employed at the inner margin of the geographical annulus above described, near the circle N, and another set of figures near the outer margin of the annulus indicates the difference in hours by standard time. An inner annulus, between the circle N and a circle N contains a set of figures located at the ends of radial lines within the circle N accurately subdividing the dial into fifteen degree sections, the figures representing the number of degrees of any given point on the dial from the prime meridian. In use, the hour hand is turned to indicate the segment representing the place at which the clock is located, the hand preferably registering with the line between this segment and the antipodean segment. The dial is then set to indicate on the fixed annulus 'bein the correct time at that place, whereupon the time at all other places represented on the dial will be also indicated. The minute hand will, of course, indicate the fractional hours, as in all ordinary clocks. When once set, the dial is rotated by the clock -mechanism and continues thereafter to indicate the time at all points.

Referring to Fig. 4, it will be observed that the construction is the same, but the arran ement of the time indicating figures is dii erent, these ranging from/O at the place of location to five in a direction opposite that of dial movement, and from the place of location, from 0 to six in the opposite direction and the fi res on the anti podean points or meridians ranging from sevento eighteen inclusive, the point 7 having a time standard differing by but one hour from the point 6, and the point 18 taken to represent the point where the ay begins. With this arrangement, all

oints ranging from right to left around the dial from the lace of location to the point where the day begins, have a time reckonin later than that at the place of location, an all points ranging in the other direction to the day beginning point have an earlier time reckoning.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is,

1. In a clock of the described class, a dial having its face rovided with an annulus subdivided radially into segmental divisions of alternately differing character, and marked to indicate time and geographical points on opposite meridians, in combinatlon with means for rotating the dial, and a fixed concentric annulus marked to indicate subdivisions in time, the divisions on the dial being marked to represent points having a time standard differing by one hour from the preceding division of the same character and twelve hours difference of opposite character to indicate a. m. and p. m. the same hour.

2. In a clock of the described class, a dial having its face rovided with an annulus subdivided radia y into segmental divisions of alternately differing character, and marked to indicate geographical pointson opposite meridians, in com rotating the dial and a fixed concentric annulus marked to indicate subdivisions in time, the divisions on the dial being marked to represent points having a time standard difl'ering b one hour from the precedin division 0 the same character, said dia being mounted between supporting disks on a central clamping member having screw threaded engagement with one of the arbors of a clock mechanism.

3. In a clock of the described class, a dial having its face provided with an annulus subdivided radially into segmental divisions of alternately differing character and marked to indicate geographical points on opposite meridians, in com ination with means for rotating the dial, and a fixed concentric annulus marked to indicate subdivisions in time, the divisions on the .dial being marked to represent points having a time standard differing by one hour from the preceding division of the same character to' ether with a ratchet and pawl winding mec anism and a pawl actuating lever depending below the dial from the rear side thereof.

4:. In a clock of the described class, a dial having its face rovided with an annulus subdivided radia ly into segmental divisions of alternately differing character, and marked to indicate geographical points on opposite meridians, in combination with means for rotating the dial, and a fixed concentric annulus marked to indicate subdivisions in time, the divisions on the dial being marked to represent points having a time standard differing by one hour from the preceding division of the same character and each division having marks to indicate the number of hours difference in time from a meridian assumed to represent the line at which any iven' day begins, and also having marks indicating the distance of such meridian from a prime meridian.

In testimony whereof I aifix my signature in the presence of two witnesses.

JEAN B. OLINGER.

Witnesses:

J. B. WELLENDORF, F. H. GRABI-IORN.

ination with means for 

